Powered only by the sun, the Solar Impulse finished a historical journey across America on July 6. It\'s creators hope the cross-country trip will inspire innovation on the ground. CBSNews.com\'s Chenda Ngak reports.

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Solar Impulse pushes pioneering spirit

2:24 min

Powered only by the sun, the Solar Impulse finished a historical journey across America on July 6. It's creators hope the cross-country trip will inspire innovation on the ground. CBSNews.com's Chenda Ngak reports.